Effect of Feeding in Juvenile Tilapia (Oreochromis niloticus) with Diet Contain Tenebrio molitor meal (Ordercoleoptera)
- 1. Department of Biology and Geology, University of Almería, Spain
Abstract
This work studies the effect of feeding juvenile Nile tilapia (Oreochromis niloticus) a diet based in Tenebrio molitor larvae meal (TM). Three different diets were tested: C diet (control, 100% fish meal, FM) and diets I and II, with 25% and 50% of FM replaced with TM, respectively. The experiment was developed in two different stages. In stage 1, the fish were divided into two groups: one group was fed with C diet and the other with diet I. In stage 2, each treatment (C and I) was divided into two treatments, four in total: treatment C?C (fish feed with diet C in both stages), treatment C?II (fish feed with diet C in stage 1follow by diet II in stage 2), treatment I?II (Fish feed with diet I in stage 1 and diet II in stage 2) and treatment I?C (fish feed with diet I in stage 1 and C diet in stage 2).
The administration of a diet based on insect meal at the second stage of the experiment (I?II and C?II fish groups) decreased the growth and nutritional indexes except for daily growth coefficient were similar C-C and I-II. The protease activity is significantly higher in fish fed with C diet at stage 2 but no significant differences were found in fish fed with C and II diet at 90 min of in vitro protein hydrolysis. The administration of an insect-based diet at early stages of development (stage 1) do not affect the nutritional indices composition, essential amino acid or polyunsaturated fatty acids in muscle if the fish were feed with diet C in the stage 2.
Citation
Sánchez-Muros MJ, de Haro C, Guil JL, Barroso FG (2017) Effect of Feeding in Juvenile Tilapia (Oreochromis niloticus) with Diet Contain Tenebrio molitor meal (Ordercoleoptera). Ann Aquac Res 4(3): 1039.
Keywords
• Fish
• Yellow mealworm
• Alternative feed
• Insect meal
• Fish nutrition